| Madrid to Bougival | 650.07 mi (1,046.19 km) |
| Madrid to Bouguenais | 478.46 mi (770.01 km) |
| Madrid to Boulogne-Billancourt | 650.47 mi (1,046.83 km) |
| Madrid to Boulogne-sur-Mer | 756.83 mi (1,218.00 km) |
| Madrid to Bourg-de-Peage | 546.59 mi (879.65 km) |
| Madrid to Bourg-en-Bresse | 600.67 mi (966.69 km) |
| Madrid to Bourg-la-Reine | 648.75 mi (1,044.07 km) |
| Madrid to Bourg-les-Valence | 536.86 mi (863.99 km) |
| Madrid to Bourges | 551.79 mi (888.02 km) |
| Madrid to Bourgoin-Jallieu | 576.73 mi (928.16 km) |
| Madrid to Bressuire | 471.91 mi (759.46 km) |
| Madrid to Brest | 552.25 mi (888.75 km) |
| Madrid to Bretigny-sur-Orge | 638.43 mi (1,027.46 km) |
| Madrid to Breuillet | 632.68 mi (1,018.20 km) |
| Madrid to Briancon | 609.01 mi (980.10 km) |
